Read the passage below and answer the question.
"what's that song. teacher zhu? " niu fen, who was a loud-mouth, asked.
"a uigur folk song," wenli said. "i, i sang it just for fun."
i don't know whether niu fen reported wenli to the school leaders. after that, i never heard her sing the song again, and she only sang the revolutionary songs she taught us in class.
what motivates zhu wenli to sing revolutionary songs instead of uigur folk songs?
her fear of being thought anti-revolutionary
her hatred of capitalist society
her dislike of uigur music
her interest in mao zedong's teachings